Diaphragm buffing mechanism



A. 1. KIPP.

DIAPHRAGM BUFFING MECHANISM. APPLICATION FILED MAR-Z0, I9I9.

1,31 3,302 Patented 9. 19, 1919.

E3 fi- HHHIIIM A v 1] UNITED sTATEsPATENT EEIC ALFRED JOHN KIPP, or MILWAUKEE, WISCONSIN, ASSIGNOR TO THE CURTAIN SUPPLY COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINorsI. 1

DIAPHRAGM BUFFING MECHANISM.

I Specification of Letters Patent. Patented Aug. 19, 1919. 7

Application filed March 20, 1919; Serial No. 283,766.

To all whom it may concern:

Be it known that I, ALFRED citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Diaphragm Bnifing Mechanism, of which the following is a specification.

In car vestibule diaphragm construction it is of great importance to embody therein bufiing mechanism which will combine in a high degree flexibility, resiliency, efficiency in taking care of the shocks and distortions incident to use of cars in yards and on curves as well as straight stretches of track, and, with all, such simplicity of construction and operation as will conduce to a low costof installation and upkeep.

According to my present invention, these objects are accomplished by substituting for the usual reciprocatory rod buffing mechanism above the vestibule a rocking leaf spring mechanism connected up with the car end and, face plate in such'manner as to most efiiciently absorb shock and compensate for lateral distortion.

In order that the invention may be readily understood a preferred embodiment of the same is set forth in the accompanying drawing, and in the description based thereon. Obviously, however, the invention is susceptible of embodiment in other and varied constructional forms without departure from the essence thereof, wherefore the drawing and description are to be taken in an illustrative rather than in an unnecessarily limiting sense. In the drawings- Figure 1 is a front elevation showin the face plate of the diaphragm and upper ufflugT mechanism. I

ig. 2 is a top plan view partly 1n section.

As herein illustrated, the underframing of the car is indicated at 11, the upper framing at 12, the car end at 13, and the end post at 14E. Suitably attached to the end plate between the end post is a stationary member 15 arranged to be telescoped with the movable member 16 of a metallic diahragm such as shown in patent to Brown, l lo. 1,167,973, which has been chosen for purposes of illustration although, obviously, the construction of the invention is susceptible of use with diaphragm constructions of any approved form whether accordion plaited fabric or of metal. In caseof a fabric JOHN KIPP, a

diaphragm the car end would correspond to the stationary member of a metal diaphragm. The face plate is indicated at 17 secured to and forming the face ofthe diaphragm member 16 and provided below'with the usual buffing stem and compression springs not shown, the same being suitably mounted Within the underframing of the Car. 7

Above, the bufiing and other strains of op eration are taken care of by means of a bow leaf spring 18 medially secured to the face plate at 19, having its extremities bent upon; themselves as indicated at 20 to form loop portions which may be upon the, iImer or outer side of the bow. Attached to' the car end at opposite sides of the vestibule are;

.keeper brackets 21, substantially U-shaped for the reception between their side walls 22 of the looped-ends 20 of the bow spring 18, the side walls of each bracket transfixed by a bolt or. pin 23 which extends through the loop 20 and serves asan anchorage for the spring end.

It willbe observed thatthe play of the spring extremities is limited in both directions as the bolt 23 contacts with one or the. other closed end of the loop, providing most efficiently for the absorption of shocks and compensating for distortions due to bufling strains obliquely applied, as upon-curves. Heretofore where the leaf spring type of upper buiiing hasbeememployed, it has been customary to provide a sliding engagement between the ends of the spring and the'plate against which they bear and to limit the movement of such spring ends in but one direction, as for instance limiting the inward play but permitting. the ends to move outwardly without ofiering any restriction to the flattening of the spring under buffing strains. Where the bufling strains are d1- rect, this usual constructionpermits of the absorption thereof by the two halves of thespring equally, but where such strains. are applied obliquely as on curves, one end of the spring moves outwardly without restraint whereas the other is prevented from moving inwardly and as a consequence the strains are applied unequally and, in extreme cases, to one-half of the springonly. There is thus no substantial compensation for lateral distortion. 7 Y

I am aware that it has been proposed to provide for laterally limiting the play of the spring ends by link connections with the car ends and also by means of a pin and slot connection, but I accomplish this result by different and improved means, utilizing a stationary bracket with no weakening of the spring by slotting at the con.-

necting point. but rather increasing its.

strength at such connection by doubling upon itself. The construction is thus simplified, cheapened and strengthened.

It will be observed that with the upper buffing mechanism described, not only is the face plate permitted to move to the rear in a right line, telescoping the diaphragm section, under direct bufling strains, but it is also permitted to freely rock on sharp curves about its vertical axis corresponding with the point of attachment of the spring 21 Without any binding of the parts and with a distribution of obliquely applied buffi ng strains throughout the two halves of the spring, thus compensating for lateral distortion, and at thesame time entailing less Wear and noise. The upper buffing mechanisnr is inexpensive from the standpoint of installation and also of maintenance, is peculiarly efii'cient, and admirably meets all the exigencies of use.

Iclaim:

1. The combination with a diaphragm bu'ifing spring reversely bent at its ends to provide elongated terminal loops, of keeper brackets to receive the looped ends of the spring and including members for engagement within the loops.

2. In a diaphragm buffing mechanism, the combination with the stationary and movable members of the diaphragm, of a bow spring attached in its medial portion to one of the members and having its ends reversely bent to form elongated terminalloops, and pins playing in said loops and secured tothe other of the diaphragm members.

3. In a diaphragm bufiing mechanism, the combination witlr the stationary and movable members of the diaphragm, of a bow spring attached in its medial portion to one of the members and having its ends reversely bent to form elongated loops, brackets carried by the other of said members, and pins mounted in the brackets and extending through the spring loops.

4. In a diaphragm buffing mechanism, the combination with the stationary and movable members of the diaphragm, of a bow spring attached in its medial portion to one of the members and having its ends bent upon themselves to form integral loops, keeper brackets fixed upon the other of said members, and pins associated with the keepers and engagingwithin the loops for permitting limited play of the spring ends Within the keepers in both directions.

5. In a diaphragm bufiing mechanism, the combination of the stationary and movable members of the diaphragm,of a bow spring attached inits medial portion to: the movable member and having its ends bent upon themselves to form integral terminal loops, and pins secured to the stationary member andengaging' within the loops whereby to permit play of the spring ends limited as to extend in both directions;

In witness whereof I have hereunto signed my name in the presence of two subscribing Witnesses.

ALFRED JOHN KIPP.

lVitnesses- OSCAR J. Renee, ELMER G. WALLIN;

CopieloZ-thispatent may be obtained for five cents each, by addressing the Gommissioner of Patents; Washingtumfl. 0. 

